[GiNaC-devel] More rules to mul::info()

[Vladimir V. Kisil]

	Dear All,

	Looking into flags (as Alexei suggested) I noticed, that GiNaC
  is not aware about a product of two negative entries to be positive.

  I am attaching a patch to amend this.
	
	Best wishes,
	Vladimir
-- 
Vladimir V. Kisil     email: kisilv at maths.leeds.ac.uk
                        www: http://www.maths.leeds.ac.uk/~kisilv/
Book: Geometry of Mobius Transformations
http://www.worldscientific.com/worldscibooks/10.1142/p835

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